ExoticRx · exoticrx.com/drugs/sulfamethazine
US brand names:Sulmet
Sulfamethazine is dosed at 50–60 mg/kg PO q24h loading then 25-30 q24h in dogs, per Plumb's Veterinary Drug Handbook, 9th Ed. Verify against current literature before clinical use.
Inhibits dihydropteroate synthase in bacterial folate synthesis. Used primarily in food animals and poultry for coccidiosis.
Withdrawal times required in food animals. Crystalluria risk. Adequate water intake essential. May cause blood dyscrasias with prolonged use.
Species references:All Cattle (Beef/Dairy) drugsAll Chicken (Poultry) drugsAll Dog (Domestic) drugsAll Swine (Pig) drugsAll Turkey drugs
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
A dog/cat sample is shown here. Cited dosing for all 5 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Dog (Domestic) | PO | 50–60 mg/kg | q24h loading then 25-30 q24h | Moderate | Plumb's Veterinary Drug Handbook, 9th Ed |
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.